Protons And Neutrons

Atomic mass (big number) the number of protons plus neutrons The atomic number is the small number Particle Where from Charge Mass Proton nucleus +1 1 neutron nucleus 0 1 electron Shells and around the outside -1 0.0005 (almost zero) Identify the types of ionising radiation Radiation (also known as nuclear radiation) refers to particles or waves emitted by radioactive substance. Nuclear radiation comes from the waves from a nucleus. Ionising radiation can

Task 1.2- Properties (Part of P1) Describe the properties of . . . and. Radiation. Things should be including: • Their range in air • What they are stopped by • Their penetrating and ionising powers • How they are affected by electrical and magnetic fields. • How they are commonly detected. • Any other properties. Alpha, beta and gamma come from nuclear of an atom and they called radioactive, because it gives off radiation. These radiations absorb by different thickness of materials such as: Alpha radiation only travel few centimetre in the air, beta radiation travels tens centimetre in the air however gamma travel many meter in the air. If the substance is thicker, the more radiation it will absorbed.

3. Samples of natural selenium contain six stable isotopes. these isotopes have the same number of proton & electrons in each atom they differ in the number of neutrons in each atom, the atomic mass, & their nuclear stability

The copper atom is constructed from three kinds of particles: protons, neutrons, and electrons. The protons and neutrons are located in a very small spherical volume at the exact center of the atom called the nucleus. Protons have a +1 charge, and nuetrons have no charge, so the nucleus has an overall positive charge. The electrons, which have a -1 charge, are located in a relatively large spherical volume around and centered on the nucleus.

Ions form when an atom either gains or loses electrons. When an atom with less than 4 valence electrons it usually loses them through ionization energy. This transforms the atom from a neutral state to a cation thus giving the atom a positive charge. When an atom loses an atom it doesn't just disappear; the electrons are usually transfered to another element. For example lets take a look at Potassium. It only has 1 valence electron so it will loose it through ionization energy and will now have a positive charge.

The atom is a unit of matter, the smallest unit of an element, consisting of a dense, central, positively charged nucleus surrounded by a system of electrons, equal in number to the number of nuclear protons. It consists of a core nucleus surrounded by negatively charged electrons. Inside the atom nucleus contains a mixture of positively charged protons, and electrically neutral neutrons. All electrons bind to the nucleus through an electromagnetic force. A ground of electrons bound together form individual molecules. An atom with an equal number of protons and electrons will hold a neutral charge. An ion has either a positive or negative charge because of a lack of electrons or an electron excess. The number of protons determines the

Chemical elements can exist in different types which are called isotopes. Isotopes have protons, electrons and neutrons. Isotopes have the same number of protons and neutrons but different number of neutrons. There are many forms of isotopes such as radioactive isotopes. A radioactive isotope can be artificially created and naturally created, radioactive isotopes are chemical elements having an unstable nucleus which decays. Alpha, beta or gamma rays are emitted until the isotope is stable. Stable form of an isotope is nonradioactive. In the 1930s Glenn T.Seaborg and his coworker original discovered the radioactive isotope Cesium 137. Isotopes may or may not be radioactive, Cesium 137 is a radioactive isotope, only elements with an unstable

Atoms are made of three parts, protons, neutrons, and electrons. Protons are pieces of matter that is positively charged (+1). Electrons are really small, smaller than protons, piece of matter with a negative charge(-1). Neutrons are pieces of matter around the same size as protons with no charge(0). Atoms are usually surrounded by electrons. When the electron and protons are at the same amount the net charge is zero. When the number of electrons and protons are not equal it causes the atoms to be ionized. These atoms are called ions. More electrons over protons are negatively charged. More protons over electrons are positive charged. The total charge would be the sum of the positive protons and negative electrons. The number of protons defines

Though there are over a hundred different elements, each one is unique in its complexity and properties. Helium has an atomic Number of two, that’s how you can tell it it has two positively charged atoms, or ‘protons’, in

Isotopes are atoms that do not have the same exact amount of neutrons. (Withcott, J. & Laposata, M. 2012). According to Essential environment: The science behind the stories” Isotopes are denoted by their elemental symbol preceded by the mass number, or combined number for protons and neutrons in the atom”. Ions are are atoms that become power driven or a blend of atoms.(Withcott, J. & Laposata, M. 2012). According to Essential environment: The science behind the stories” Ions are denoted by their elemental symbol followed by their ionic charge.

An atom is the smallest particle of a chemical element that can exist. Atoms consist of negatively-charged electrons orbiting a positive nucleus. Inside the nucleus are positively-charged proton/s and electrically neutral neutrons.

Each atom of a particle element the majority of the time look and behave the same as any other atom of the same element. When comparing two atoms of Carbon for example, they both contain the same number of protons and electrons. In this case the both contain 6 protons. The equal number of protons and neutrons in this atom creates stability in its nucleus. The two atoms of carbon also have the same mass, approximately 12 amu, but like all things in nature there are exceptions. A different atom of carbon can contain 8 neutrons in its nucleus for every 6 protons. When an atom of an element contains more or less neutrons to protons an unstable environment is now created in the atom which is called a radioactive isotope. The loss of a neutron in the nucleus of an atom emits energy which can also be referred to as radiation. What makes these radioactive isotopes so different between stable atoms is the energy that is released through the loss of the extra neutron in the atom in an attempt to stabilize.

the nucleus of the atom, research revealed that if the nucleus of certain elements is split, causing

2.1 1. (A.) The structure of an atom consists of protons, neutrons, and electrons. The neutrons and protons are retained together in the middle of the atom to create an nucleus. (B.) 20 2. (B.) Carbon-12 and carbon-14 are both isotopes of carbon. The difference they have is the difference of neutrons. Carbon-12 have 6

An Atom is the the basic building block of all matter. Atoms are made up of Particles, called: Protons, neutrons and Electrons. Protons carry a positive charge, the neutron carry 's a neutral charge and the electron carry’s a negative charge. The Atom has two main parts the Nucleus and the Electron Shell. The Nucleus contains the Protons and Neutrons. The electron Shell Contains the The electrons.